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Utterly insane twin-supercharged V10 1 Series will rock your world
Twin-supercharged V10 1 Series
Does a 1 Series need a V10? No. Does it also need twin supercharges? No. This 1 Series has both those things. Deal with it. Words: Elizabeth de Latour. Photos: Speedyshots.
We’ve had some pretty wild 1 Series feature cars in #PBMW over the past 12 months but we figured we’d save the best for last and go out with a bang, this being the final issue of 2016 and all. And bangs don’t come much bigger than a twin-supercharged V10 1 Series. Merry Christmas everybody. In south eastern Germany, a couple of hours drive out of Munich, lies the small town of Geiselhöring. There’s a railway station, timber yard, a pizzeria, and a supermarket; it takes a few minutes to drive from one end of town through to the other and out into the German countryside. It’s a pretty town with some lovely old architecture and you might catch a glimpse of it through your car window as you drive through Geiselhöring on your way to somewhere else. But this unassuming German town has a secret. I know this because, years ago, I travelled there for a festival of E30 M3s and discovered the secret for myself.
Once upon a time, many, many years ago, a man named Karl Jungmayer, a man with passion for cars, for racing and especially for BMWs, established a #BMW garage which quickly gained a reputation for excellent service and superior BMW know-how. In time his son, Karl Junior, joined the family business and then his son, also named Karl, followed in the footsteps of both his father and grandfather and became part of the family’s rich BMW history and tradition. For a time, all three generations of Jungmayers, three men named Karl, were able to enjoy their love for BMW together, with Karl Sr. having amassed a spectacular collection of classic BMWs over the years and Karl Jr. adding to it with a burgeoning collection of his own. Sadly, time did what it does and Karl Sr. passed away a few years ago and, tragically, earlier in 2016, Karl Jr. lost his father after a long battle with illness. At 25 he is now the owner of his own workshop, a huge responsibility at a young age, but he also just so happens to be a BMW Master Technician. One glance at the cars he’s built for himself tells you this is a man who not only lives and breaths BMW but who also has the serious technical expertise to build a car as spectacular and utterly unhinged as this 1 Series.
“I had a plan,” says Karl as we try to work out in what universe building this car seemed like a reasonable thing to do. “I wanted to take the smallest car from BMW, the 1 Series, and fit it with the biggest engine, the legendary S85 V10.” Simple. That would really be enough for most people, and we could wrap up the feature right about here, but for Karl that was just the tip of a very large V10-powered iceberg. “We made this little monster,” he says, gesturing at the five-door E87 1 Series that was chosen for the transplant, “but with 507hp it was not enough.” Sorry, we have to just pause there for a moment. 507hp really is enough. It was enough in the E60 M5. It was enough in the E63 M6. And it would have most definitely been enough in a small, light 1 Series hatchback. But we’re clearly in the wrong, here. So, if 507hp isn’t enough, what do you do about it? “When I saw the #G-Power-Bi-Kompressor kit I knew I needed it,” grins Karl. Yeah, that’ll do it. What you have to realise is that we’ve skipped over the six months’ worth of weekends that it took to fit the V10 into what started life as a 120d, with an absolutely vast amount of work required to make it fit. All that work was carried out under Karl’s company, #KJ-Performance . Karl says that the steering, sump, exhaust manifolds and drive belts all had to be modified, along with a lot more besides. Be under no illusion that this was anything less than a Herculean engineering task. You have to take our word for it that there’s even a V10 in the engine bay because you can’t actually see it. Bonnet off, it’s all about the superchargers. Supercharges. Two superchargers. They’re not small, either; a pair of ASA T1-313s, each one measuring over 20cm in diameter and weighing 5.5kg, each one rated up to 420hp. These are serious pieces of kit and they dominate the engine bay. And then there’s the massive chargecooler setup mounted on top of the engine and the stuff you can’t see, like the uprated injectors and completely custom exhaust system. And, of course, you can’t fit an S85 V10 with just any old gearbox, the two choices being the ZF Type G six-speed manual, as available in the US and Canada, or the seven-speed SMG III. Here Karl has opted for the latter, with SMG not only being better suited to the S85 but it’s also a far more impressive technical achievement to see this transmission mounted in a 1 Series.
Strapping two superchargers to a V10 and then stuffing it all under the bonnet of a 1 Series is all well and good but what you’ve got now is a 120d with hundreds of horsepower that it was never designed to deal with in the first place. You need to get your chassis and transmission well and truly sorted or you’re going to have a pretty bad time. So, what did Karl do? Well you may or may not have noticed that the front and rear arches of this 1 Series are ever so slightly wider than on an ordinary 120d, 1cm at the front and 2.5cm at the rear, and that’s because the car’s been fitted with the front and rear axles from an E92 M3, brakes, suspension, the lot, along with an uprated front anti-roll bar, which means this 1 Series now has a fighting chance when trying to cope with the vast amounts of power and torque being churned out by the engine.
Of course, building a monstrously powerful 1 Series doesn’t have to be all business and ensuring that a car like this looks as good as it goes is just as important as what’s under the bonnet. Karl’s definitely kept things subtle on the styling front, hinting that there’s something going on beneath the surface of this 1 Series but without shouting about what it’s capable of.
The more aggressive front bumper is from an E82 135i Coupé, enhanced with the addition of a carbon fibre splitter. At the rear the roof spoiler comes from BMW’s aero kit and the single tailpipe definitely isn’t giving the game away. The only exterior modifications that let you know that this 1 Series is not to be messed with are the V10 badges beneath the side repeaters and the holes in the bonnet which have been covered with mesh and which sit right above each of the superchargers, helping to keep them cool. The wheels are #BBS-CH -Rs, 8x19” up front and 9.5x19” at the rear, and they look really good on the 1 Series, both in terms of style and size.
The interior hasn’t been forgotten about and there’s plenty to get excited about here. Clearly not content with fitting M3 axles, Karl decided to fit the front seats from an E90 M3, along with a DCT steering wheel, the paddles ready to be integrated with the SMG gearbox. The SMG gear selector looks like it could have been factory-fitted while the iDrive now allows Karl to configure the SMG’s shift programme and the engine’s power mode, while the instruments are a custom combination of 120d and E92 M3 elements, with the gear selection displayed in the middle of the cluster.
This 1 Series is an absolute masterpiece of engineering and an incredible achievement. The engine swap alone is mind-boggling and that’s before you factor in the superchargers and making it all work, and the SMG, and the M3 underpinnings. It’s a mesmerising machine and one that delivers on every level. No aspect of the car has been overlooked; it’s a performance #BMW through and through. Of course, it comes as no surprise to learn that a man who deemed a 507hp V10 to be insufficient for his 1 Series project is still not satisfied. “We need a new exhaust system for more power and we need more boost,” he says. Seriously!
Engine bay is dominated by the twin chargecoolers, with the V10 somewhere beneath them, and those massive twin superchargers.
DATA FILE #Twin-supercharged-V10 / #BMW-E87 / #BMW-1-Series / #BMW-1-Series-E87 / #BMW / #BMW-1-Series-V10 / #BMW-E87-V10 / #G-Power / #SMG / #BBS
ENGINE AND TRANSMISSION 5.0-litre #V10 #S85B50 / #S85 / #BMW-S85 , modified steering, sump, exhaust manifolds, drive belts, #G-Power-SK-III-RS-Bi-Kompressor kit with twin #ASA-T1-313 superchargers and twin chargecoolers, M550d intercooler, uprated injectors, custom exhaust system with single tailpipe, seven-speed #SMG-III gearbox
POWER 750hp, 530lb ft of torque
CHASSIS 8x19” ET40 (front) and 9.5x19” ET35 (rear) #BBS-CH-R wheels with 225/35 (front) and 255/30 (rear) Continental ContiSportContact 5P tyres, complete axles with brakes and suspension from E92 M3 (front and rear), uprated front anti-roll bar
EXTERIOR E82 #BMW-135i / front bumper, carbon front splitter, custom vented bonnet with mesh inserts, BMW aero kit rear spoiler, arches widened by 1cm (front) and 2.5cm (rear)
INTERIOR E90 M3 front seats and DCT steering wheel, SMG gear selector, custom instrument cluster
“I wanted to take the smallest car from BMW and fit it with the largest engine”
Dash is a mix of 120d and E92 M3, while iDrive display allows configuration of engine and transmission
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